Roller for oil mix roads



Dec. 17, 1935.

J. R. RlTCHlE ROLLER FOR OIL MIX ROADS Filed Aug. 2, 1933 Patented Dec.17, 1935 UNITED STATES PATENT oFFicE 10 Claims.

This invention relates to a machine for operating on roads and properlypreparing the surfaces thereof. A great many roads now have theirsurfaces made of gravel or similar material which is mixed with oil.Different kinds of oil are used on the roads, some of the oil beingmixed with bitumin, tar, asphalt or similar substances. Difculty hasbeen experienced in properly finishing the surfaces of such roads. Themixed gravel and oil is spread out on the roads and must then be packedto a certain extent. The material does not roll down well with a rollerhaving a hard or steel surface as the oil sticks badly to the surface ofthe roller. It has been found that the ordinary traiiic of vehicles whenconned to slow speeds has heretofore rolled the surface into the bestcondition.

It is an object of this invention to provide a simple and efficientdevice for effectively rolling the surface of such a road.

It is a further object of the invention to provide a device for rollinga road surfaced with mixed gravel and oil or similar mixture whichcomprises a series of wheels arranged side by side, the same havingresilient or rather large pneumatic tires thereon, said devicepreferably having a second series of wheels adapted to follow the firstmentioned wheels and which are arranged to aline longitudinally with thespaces between said first mentioned wheels.

It is still another object of the invention to provide such a device asabove set forth in which the wheels have independent rotary movement soas to\have a differential action when the device is making curves.

It is more specifically an object of the invention vto provide a devicehaving a body adapted to be loaded to secure the desired weight, whichbody is supported on front and rear axles, each axle having a pluralityof spaced wheels rotable thereon, the wheels being equipped with ratherlarge pneumatic tires and being laterally spaced from each other on therespective axles, the wheels on one axle being longitudinally alinedwith the spaces between the wheels on said other axle. The front axle ispreferably swingable relatively to said body about a vertical axis.

These and other objects and advantages of the invention will be fullyset forth in the following description made in connection with theaccompanying drawing, in which like reference characters refer tosimilar parts throughout the several views and in which:-

Fig. 1 is a plan view of the device; v

Fig. 2 is a view in rear elevation as seen from line 2-2 of Fig. 1looking in the direction of the arrows;

Fig. 3 is a view in front elevation as seen from the right of Fig. 1;

Fig. 4 is a partial section taken on line of Fig. 1 as indicated by thearrows; and

Fig. 5 is a partial view in side elevation.

Referring to the drawing, a device is shown comprising a body member I0.While this member could take various forms, in the embodiment 10 of theinvention illustrated, it is shown as having a substantially at top andas being formed from a pair of spaced I-beams Illa which extendlongitudinally of said body, another I-beam IIlb extending at rightangles to and between I-beams 15 Illa adjacent the rear thereof and apair of spaced channel members I0c extending at right angles to andbetween I-beams Illa and having their channelsl facing each other. Apair of channels Illd also form the sides of said body be- 20 ing spacedoutwardly from and parallel to I-beams Illa and having their channelsdirected inwardly and a pair of channel members Ille form the ends ofsaid body extending between and connected to the channels Id at right 25angles thereto and being welded to the ends of I-beams I 0a. A pair ofbars Illf extend diagonally between I-beams Illa and from points thereonadjacent I-beam Ib and the adjacent channel I0c, bars If beingpreferably secured to the lower flange of I-beams Illa in any suitablemanner as by being Welded thereto. The body I0, as described, thusconstitutes a rigid frame rectangular in plan. A plate II extendsbetween and is secured to the lower flanges of 35 channels I0c having adownwardly directed boss which rests on an upwardly directed boss formedby a plate I2 secured to a curved yoke I3 formed of a channel member andhaving downwardly directed arms I3a to the lower ends of which are 40secured by bolts i4, ball bearings I5. Yoke I3 is connected to frame I0by a vertical pivot I6 extending through plates Il and I2 and yoke I3. Atongue I'I extends forwardly from yoke I3 and I comprises spaced armssecured at the rear ends 45 to the sides of yoke I3 and convergingforwardly, the same being connected. at the forward ends and having aclevis I8 secured to the top thereof by bolts I9. A pair of spacedplates 20 are -secured to-the top of tongue I1 and to the front 50 ofyoke I3, which plates have transverse apertures therethrough abovetongue I1. An axle 2l extends through bearings I5 having sleeves thereonrotatable in said bearings and a plurality of wheels 22 are mounted onsaid axle, said 55 wheels being spaced from each other longitudinallyoi' said axle and being equipped with rather large pneumatic tires. Arms23 of box section are secured to body I0 at their upper ends and extenddownwardly having secured therein by bolts 24, ball bearings 25 similarto bearings |5. A rear axle 26 extends through between and beyond thebearings 25, said axle having sleeves 21 directly engaging and rotatablein bearings 25. A plurality of wheels 28 are mounted on axle 26 beingspaced from each other longitudinally of said axle. Wheels 28 areequipped with rather large pneumatic tires 28a. Each of the wheels 22and 28 have hubs such as 28h and the end wheels on axles 2| and 26 havesaid hubs overlapping the reduced portion of a collar 29 pinned orbolted to axle 26 by the headed pi'n or bolt 3U. 'Ihe other end of thewheel hub overlaps the end of sleeve 2l. Each wheel hub is also providedwith spaced bushings 3| running on axle 26 and an oil space or reservoiris provided between said bushings to which oil may be supplied throughthe oil cups 32. Sleeve 21 has a bead or small collar 21a engaging oneside of bearing 25 for taking the end thrust on said sleeve. 'Ihe wheelat the inner side of the bearings I5 and 25 also has its hub overlappingthe end of the sleeve in said bearings and the inner end of said huboverlaps a short sleeve 33 disposed on axle 26. A short sleeve 34engages the end of sleeve 33 and spaces the same from a similar sleeve33 extending toward the next wheel and having its end overlapped by thehub of said wheel. The arrangement of the sleeves and wheels onV axles2| and 26 is thus the same, rear axle 26 being shown as having ilvewheels mounted thereon while the front axle 2| has four wheels thereon.The number of wheels can, of course, be varied as desired. It will benoted that the wheels on the rear axle are centrally alinedlongitudinally of the devicewith the spaces between the front wheelsrespectively. The wheels 22 and 28 are equally spaced on axles 2| and 26respectively.

In operation, the device is attached to a suitable -traction means bymeans of clevis I8 so as to be drawn along the road to be packed andsurfaced. Considerable weight is placed on the body 0f. as may besuitable for the specific conditions. This weight is usually made up byplacing bags of sand on body I0 and piling the same upwardly thereon. Inpractice the body I0 has also been made of hollow or tank formation andA filled with steel shavings or turnings. When the weight has beenplaced on the device in suitable amount it is drawn along the road atslow speed and the mixture of gravel and oil is effectively packed andsurfaced. It will be noted that the size of the tires and spacing of thewheels is such /that as shown in Fig. 2 over 75 per cent orsubstantially the entire surface is engaged and packed when the frontand rear wheels are drawn thereover. The amount of the surface actuallyengaged will,.of course, depend on the load which is on the platform I0.'I'his is illustrated in Figs. 2 and 4. The effect of the device is muchthe same as trame passing over the road but a better action is had sincethe packing is uniform and slow and, as stated, the entire surface of astrip is engaged. By drawing the device over the road repeatedly, thematerial is suitably packed and a smooth surface obtained. It will beseen that the device can be readily drawn and turned as yoke I3 and thefront axle swing about the central vertical axis of pin I6. It will alsobe noted that the wheels have independent rotary movement on the axles.A differential rotation is thus had when the device is making a turn oroperating on a curve. The wheels rotate only by friction and a smoothaction is thus had with no scuing of the road surface. 'I'he apertured 5plates 20 are provided so that safety chains may be placed in theapertures thereof when the device is being drawn, which chains will, ofcourse, be connected to the traction vehicle.

From the above description it is seen that ap- 10 plicant has produced asimple and efficient device for packing and properly surfacing roadssurfaced with mixed gravel and oil or a similar mixture. The device issimple in construction and easily operated. The same is very ruggedly l5made and will have small maintenance cost. 'I'he device has been amplydemonstrated in actual practice and found to be very successful andellicient.

It will, of course, be understood that various 20 changes may be made inthe form, details, arrangement and proportions of the parts, Withoutdeparting from the scope of applicant's invention. which generallystated, consists in a device capable of carrying out the objects aboveset forth 25 in the parts and combinations of parts disclosed anddeilned in the appended claims.

What is claimed is:-

1. A device for rolling 'and packing oil mix roads having incombination, a frame, a pair oi' 30 spaced bearings, sleeves rotatabletherein, an axle extending between and through said sleeves, wheelsrotatable on said axle having hubs overlapping the outer ends of saidsleeves respectively, means holding said wheels from movement out- 35wardly from said bearings, a plurality of wheels -between said bearings,the wheels adjacent said sleeves having their hubs overlapping the endsof said sleeves respectively, a plurality ot short sleeves between eachof said latter wheels. the 40 sleeves adjacent the hubs of said wheelsbeing overlapped by said hubs.'

2. A device of the class described having in combination, a body, afront axle secured to said body, a series of wheels mounted on saidaxle, 45 said wheels being equipped with tires of yielding resilientmaterial, a rear axle secured to said body, a series of wheels mountedon said rear axle, said latter wheels being equipped with tires ofyielding resilient material, said wheels on said 50 front and rear axlesbeing arranged in staggered relation.

3. A device of the class described having in combination, a frame, afront axle mounted on said frame, a series of wheels mounted on said 55front axle, said wheels being equipped with tires of yielding resilientmaterial, a rear axle mounted on said frame, a series of wheels mountedon said rear axle and equipped with tires of yielding resilientmaterial, said wheels and tires being 60 so spaced and proportioned thatsubstantially the entire area over whichsaid device is drawn is engagedby said tires. l

4. A devi of the class described having in combination, a body adaptedto be loaded to be 65 weighted, a front axle secured to said bodymounted to swing about a vertical axis. a series oi' wheels spacedlaterally from each other mounted on said axle and having tires ofyielding resilient material thereo a rear axle secured 70 to said bodyhaving a series of wheels thereon spaced laterally from each otherhaving tires of yielding resilient material thereon, said latter wheelsbeing alined longitudinally with the spaces between the wheels on saidfront axle. 75

5. The structure set forth in claim 4, said wheels on said rear axlehaving independentl secured in said arms adjacent their lower ends,

an axle mounted in said bearings, a pair of wheels mounted on said axleat the outer sides of said arms respectively, a plurality of wheelsmounted on said axle between said bearings, a yoke connected to saidbody adjacent its forward end and swingable about a vertical axis, saidyoke having downwardly extending spaced arms, bearings mounted in saidarms adjacent their lower ends. a front axle mounted in said lastmentioned bearings, wheels mounted on said front axle at the outer sidesof said last mentioned bearings respectively, a plurality of wheelsmounted on said front axle between said bearings, all of said,

wheels being equipped with pneumatic tires.

7. The structure set forth in claim 6, said wheels on said rear axlebeing in staggered relation to said wheels on said front axle and all ofsaid wheels having independent rotating movement on said axles.

8. A device of the class described having in combination, a body adaptedto be weighted, spaced bearings carried by said body beneath andadjacent one end thereof, an axle journaled in said bearings, a wheel ateach end of said axle at the outer side of said bearings, a plurality ofwheels on said axle between said bearings, spaced bearings carried bysaid body beneath the same and adjacent the other end thereof, a secondaxle journaled in said latter bearings, a wheel mounted at each end ofsaid second axle at the outer side of said last mentioned bearings, aplurality 5 of wheels on said axle between said last mentioned bearings,all of said wheels being equipped with resilient tires and the wheels onone of said axles being staggered in relation to the wheels on the otheraxle. l0

9. A device of the class described having in combination, a frame, apair of spaced bearings, sleeves rotatable therein, an axle extendingbetween and through said sleeves, wheels rotatable on said axle havinghubs adjacent the outer ends of said sleeves respectively, means holdingsaid wheels from movement outwardly from said bearings and a pluralityof wheels between said bearings.

10. A device for rolling and packing oil mix roads having incombination, a frame, a series of laterally spaced wheels mountedthereon, said wheels having pneumatic tires of relatively large sizethereon and a series of wheels spaced longitudinally from said Wheelsmounted on said frame and also spaced laterally from each other havingpneumatic tires of large size thereon, said latter wheels being disposedin longitudinal alinement with the spaces between said first mentionedwheels, said tires being of such size and said wheels being so spacedthat substantially the entire area of the surface traversed is engagedwhen said front and rear wheels pass thereover.

JOHN R. RITCHIE.

